Now that https://github.com/w3c/csswg-drafts/issues/10234 has been resolved (remove the hoisting behavior), we should implement it
<rdar://problem/130094168>
Pull request: https://github.com/WebKit/WebKit/pull/30444
Committed 283188@main (f0fd3ce9cf0c): <https://commits.webkit.org/283188@main> Reviewed commits have been landed. Closing PR #30444 and removing active labels.